2-Hydroxy-3-nitro-5-(trifluoromethoxy)pyridine-4-sulfonamide
3-Iodo-2-methoxy-5-methyl-4-(trifluoromethoxy)pyridine
5-(Difluoromethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylic acid
3-Hydroxy-6-nitro-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride